1) Not without a visa that permits employment. You can contract with US companies but you can't work while physically in the US. 2. Cost of enforcing a contrac

1) Not without a visa that permits employment. You can contract with US companies but you can't work while physically in the US. 2. Cost of enforcing a contract will normal far surpass the amount involved, jurisdiction across national borders won't matter unless you're a multinational corporation. Don't put yourself in a position where your customer can owe you a lot of money. Bill by small short-term deliverables, or by hours worked, no less frequently than monthly. 3. The US only taxes citizens, permanent residents, and holders of visas that permit work in the US. As a non-citizen working remotely from abroad you aren't subject to US income taxes. 4. Transferwise, Square, PayPal, wire. Some foreign banks have US branches that take deposits. You probably can't open a US Bank account from abroad. You don't need a business bank account but some people find it useful to separate personal expenses. 5. I'm a US citizen working remotely so I don't know personally. I have friends who aren't US citizens working remotely for US companies. If you offer something of value you can probably find customers.